The French international joined the Blues in 2018 from Arsenal and won the FA Cup, Champions League and Europa League in these last three seasons.
The 35-year old striker explains on how his Chelsea departure was tough this summer.
Giroud told talkSPORT: “[I spent] three seasons-and-a-half there [at Chelsea]. I had an amazing time at Arsenal but [at Chelsea] I can say even more because I won the big titles.
“It was emotionally difficult to leave when I left Montpellier and Arsenal, but even more tough [at Chelsea] because I didn’t play the last three months so it was evidence for me to leave and go for another challenge.
“I felt frustrated a little bit to not play the last three months because I contributed well to the Champions League success by finishing top scorer for the team.
“But what can I say? We were so successful and I am so pleased with the FA Cup, Europa League and Champions League. I scored a few important goals.
“It was tough to leave Chelsea and the Premier League but at the end of the day I think it was the best solution for me.”
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